| Paraguay River |
a large river in South America that begins in southwestern Brazil, flows through Paraguay and along its border with Argentina. Finally, it joins the Paraná River at the southwestern tip of Paraguay. |
| Paraná River |
a major river in South America that starts in Brazil and flows mostly south. The Paraná River eventually joins a river called the Uruguay and empties into the Atlantic Ocean at the border between the countries of Argentina and Uruguay. |
| perimeter |
the boundary or border of a figure or area. [2 definitions] |
| Potomac |
a river of the eastern United States. It flows from West Virginia along the border of Washington, D.C., and into the Atlantic Ocean. |
| Quebec |
a province in eastern Canada on the U.S. border between New Brunswick and Ontario. Its capital is Quebec City. |
| rim |
the edge or border of something round or circular. [2/3 definitions] |
| Saskatchewan |
a south central Canadian province on the U.S. border between Alberta and Manitoba. Its capital is Regina. |
| scallop |
one of a series of curves in a border. [1/4 definitions] |
| shoulder |
the edge or border of a road where cars can stop. [1/5 definitions] |
| side |
one of the lines forming the border of a geometric shape. [2/12 definitions] |
| Tajikistan |
a Central Asian country on the northern border of Afghanistan. The capital of Tajikistan is Dushanbe. |
| Ural Mountains |
a mountain range in Russia, extending from the Arctic Ocean to near the Caspian Sea and forming a border between Europe and Asia; Urals. |
| verge |
the border or edge of something. [3/4 definitions] |
| West Bank |
an area in the Middle East between the west bank of the Jordan River and the eastern border of Israel. It was once part of Jordan and was taken over by Israel in 1967. |
| Zambezi River |
a major river in southern Africa that flows through Zambia, Angola, and Mozambique before emptying into the Indian Ocean. It also touches the borders of Namibia and Botswana and flows along the border between Zambia and Zimbabwe. |